Incubator.



A. n. BREDER.

INCUBAIOR. APPLICATION FILED SEPT- 23, 1912- l a Patented Oct 24, 1916.

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A. D. BREDER.

INCUBATOR APPLICATION FILED SEPT- 23. 1912.

1 %U% ML Patented 0.0m. 24,1916.

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To all whom it may concern."

' Be it known that I, AnoLPH I). BREDER, a

citizen of the United States, residing at Verona, in the county ofLawrence, State of Missouri, have invented certain new and usefulImprovements in Incubators; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to new and useful improvements in incubators.

The principal object of the invention is to provide a means forautomatically-regulating the temperature of incubators.

Another object of the invention is to provide a heat regulating meansfor the purpose set forth which may be easily adjusted and therebyregulate the temperature of the incubatorto a nicety.

A further object of the invention is to provide a heat regulating meansfor the purpose set forth which is extremely simple in construction, itbeing composed of a minimum number of parts and is thereforecheap tomanufacture.

. With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated. in the accompanying drawings and pointed out in the claimshereto appended; it being understood that the air conveying pipes beingbroken away to better show the operation thereof, Fig. 2

is a vertical longitudinal sectional view taken through the heatingdrum, Fig. 3 is a vertical transverse sectional view taken through theincubator, and Fig. 4 is a detail horizontal sectional view through aportion of the incubator and the heating drum.

Like reference numerals designate correspending parts in all the figuresof the drawings. 9

Referring to the drawings, an incubator of any suitable type isindicated as a whole by the reference numeral 10. Supported upon abracket II which depends from the Specification of Letters Patent.

Patented ct.2t, IQHII B.

' KF Application filed September 23, 1912. Serial No. 721,938.

incubator is-an oil burner 12 of any suitable type. The heat from thisburner passes upwardlythrough an air conducting pipe 13, and connectedto the upper end thereof is a fine 14 which is preferably smaller thanthe pipe 13, and which in fact, forms a continuation thereof. Alaterally directed air pipe drum 17 of any suitable construction.

A transverse rock shaft 18 is suitably journaled in the drum 17 exteriorof the flue 14: and pipe 13, and fixed on this shaft is a valve 19 whichis adapted to alternately close the flue 14 and the air pipe 15 so as toeither direct the hot air from the burner 12 outwardly through the flue14.- or into the incubator 10 through the pipe 15.

In order to actuate the valve 19 when the temperature. within theincubator varies, there is provided a bracket 20 which is suit-- ablysecured within the incubator 10 and supports a thermostat 21 of theexpanding type, the upperplate thereof carrying a seat 22. Secured tothe bracket 20 is a bracket arm 23 which terminates at'i ts inner enddirectly above the seat 22. Journaled in the free end of the arm 23 at apoint to one side of the seat 22 is a rock shaft 24,, one end thereofextending forwardly thrdugh an opening 25 formed in the wall of theincubator 10 adjacent, the drum 17'. Fixed on the inner end of the shaft24-is a U-shaped for engagement with the opening formed in the pin 27,and the lower end of this rod bears upon the seat 22 of the thermostat21. The upper end of the rod 28 passes through an opening 29 formed inthe top of the incubator 10 -and extends through an opening 30 formed ina plate 31 which issecured to said top. The upper end of the rod 28terminates in a head 32, and in order to lock the rod 28 from downwardmovement when the thermostat contracts.- there is provided a slidingplate 33; which is centrally slotted, as at 34,

for receiving the rod 28. This plate is disposed under thehead"32 andoperates between opposed a 3M5 formed on the plate 3.1., It will thus beobserved that when the thermostat 21 expands, the rod 28 Will beelevated, and through themedium of the pin 27 the U-shaped rocker arm 26will cause the rock shaft 24 to be oscillated. Abalance lever 36 isprovided intermediate its ends with a weight 37 which is formed with atrans'verseopening for receiving the rock shaft 24, saidlever beingloosely mounted uponsaidzrock shaft. The

rock shaft '24 extendsbey o nd the weight 37, and ,connected to this endis the end of the long arm of a J-shaped finger 38. The end of the shortarm of the finger is disposed below the end of the weight 37opposite-the rock shaft 24, and isheld in adjusted posi- 42, one endthereof beingsuitably connected to a link 43 which is connected atitsother end to'the adjacent end of the balance lever 36. It willthus beobserved that as the lever 36 is oscillated through the medium of therock shaft .24 and finger 38, the link 43 will oscillate the rock shaft18-through the medium of the arm 42 and thereby actuate the valve 19.

Thevalve 19 is normally arranged to close the flue 14 and in order toassist in thus positioning the valve, the end of the rock shaft 18opposite the transverse arm 42 is formed with a lateral arm 44, and uponthis arm is adjustably mounted a weight 45.

In order to balance the lever 36 to a nicety,

' the end of the lever opposite the link 43 is provided with anadjustable weight 46. 45

In operation, when the temperature within, the incubator risesabove apredetermined amount, the stand rod 28 is elevated, and as abovedescribed, the rock shaft 24 will swing th'e finger 38, and this fingerwill in turn actuate the balance lever 36. The lever 36 will, throughthe medium of the link 43 and V arm 42 oscillate the rock shaft 18 toswing the valve 19 downwardly to close the air .28 can then pipe 15, andthereby cut oil the hot air to the incubator. The hot air within theincubator can readily pass out through the air escape pipe 16 and'thencethrough the flue 14. As soon, however, as the temperature Within theincubator returns to its normal temperature, the thermostat 21 willpermit of the stand rod 28 to fall by gravity, and as a result, theparts will be returned to their normal position; that is, the valve 19will be positioned to close the flue 14 and thereby permit the hot airfrom the burner 12 to pass into the incubator through the pipe 15. Bymeans of the stand rod 28 having threaded engagement with the pin 27,the relative position between the stand and the thermostat 21 may beeasily regulated, and consequently the predetermined temperature Withinthe incubator may be retained.

When it is desired to remove the top of the incubator, the sliding plate33 is disengaged from the plate 31 and the head 32 of the rod passthrough the opening 29 of said top.

What is claimed is: 1. In a heat regulating system, the combination of ajournaled shaft, a valve plate carried by said shaft, a thermostat, abar movable by said thermostat, a second journal shaft, a lateral arm onthe first named shaft, a link connecting the free end of said arm andthe second named shaft, and a rod connected with said second named shaftand gertically adjustably connected with said 2. In a heat regulatingsystem,'the combination of a journal shaft, a valve plate carried bysaid shaft, athermostat, a bar movable by said thermostat, a rockermember pivoted upon said bar, the bar having screw threaded engagementwith the pivot of said member, a second rock shaft, an arm carried bysaid first named shaft, a link connected with the free end of said armand said second named shaft, and a rock shaft revoluble in said memberand connected with said second named rockshaft.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

' ADOLPH D. BREDER. Witnesses:

FREDERIGK W. BREDER, E. G. R-A'IHBONE.

